CentOS - Sep 2008 - Yumex-Error in loading repository data

On a CentOS 4 desktop Yumex gives the error message 
"Error in loading repository data" but yum works fine
from the cli. Could something have been broken in
yumex? Putting yumex in debug mode does not give me
clues as to the error message. 

Thanks,
Josh

It looks like it could be this bug http://bugs.centos.org/view.php?id=2549 
meaning yumex has been broken on CentOS 4.X for quite some time.

Thanks,
Josh.